61021642 has 16 divisors (see below), whose sum is σ = 100000800. Its totient is φ = 27696240.

The previous prime is 61021627. The next prime is 61021663. The reversal of 61021642 is 24612016.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17284 + ... + 20512.

It is an arithmetic number, because the mean of its divisors is an integer number (6250050).

Almost surely, 2^61021642 is an apocalyptic number.

61021642 is a deficient number, since it is larger than the sum of its proper divisors (38979158).

61021642 is a wasteful number, since it uses less digits than its factorization.

61021642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 61021642 is about 7811.6350401180. The cubic root of 61021642 is about 393.6962667249.

Adding to 61021642 its reverse (24612016), we get a palindrome (85633658).

It can be divided in two parts, 6102 and 1642, that added together give a square (7744 = 88²).

The spelling of 61021642 in words is "sixty-one million, twenty-one thousand, six hundred forty-two".